diff --git a/jenkins-docker/agent-release/Dockerfile b/jenkins-docker/agent-release/Dockerfile
index 2e71073..e83cdc7 100644
--- a/jenkins-docker/agent-release/Dockerfile
+++ b/jenkins-docker/agent-release/Dockerfile
@@ -10,7 +10,7 @@
 
 COPY gerrit-release.sh /usr/local/bin
 COPY gerrit-upgrade-test.sh /usr/local/bin
-COPY gpg-loopback /usr/local/bin/gpg-loopback
+COPY --chmod=555 gpg-loopback /usr/local/bin/gpg-loopback
 
 USER jenkins